Fiat Punto 1.2 8v

[kospoz]

Hi I have problem with ecu from this car. I have read the Motorola chip 9s12d with upa and did immo off. I have written file back and car started. After a few days car is not starting no fuel pump working nothing. Like ecu is dead.maybe checksum problem? Is possible after some ignitions to have checksum problem?

[dgr77]

hello, it's not checksum problem, check the ecu connections cable

[kospoz]

Maybe wiring problem?

[AVDigitale]

disconnect immo box

[dgr77]

yes it's possible,after the vehicule start it's not possible checksum problem, check the connection and use diagnostic if you have fault code